I'll focus mainly on Gjallarhorn. I hated it. I hated having to use it. I hated not being able to use other stuff because of it. Not because I can't to the activities without it, but because it was expected of me to use it and most people DEMAND that you use it. I'll admit I grinded for it, searched high a low I'll admit it felt amazing to see it drop for me at the end of a nightfall. BUT It quickly became boring, need something done? Nuke it with Gjallarhorn and move on. The game became less challenging and somewhat boring. I'm happy they're leaving it behind. I'm happy to be starting n a clean slate. As for the rest of the Exotics? I'll wait to get a full list of what can be upgraded before I say anything.